ip6000D won't print reds, used 3 different printheads

[joehud]

I've literally installed 3 different print heads (all with exact result), and all new ink. The ink is some cheap knock off stuff, but they're obviously full. Could this issue be the printer hardware itself, or is that not possible?

This is the screen image

This is what prints (the exact result on each print head):

[Patrick]

Hi joehud,

If using 3 different printheads in your PIXMA iP6000D does not get your printer to print correctly, it would appear as though your PIXMA iP6000D would require service.

To obtain your service options, please contact our support group using the following link:

http://www.usa.canon.com/cusa/consumer/standard_display/contact_us_consumer